go_id,ontology,go_term,term_definition,evidence GO:0005102,MF,"receptor binding","Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.",IPI GO:0005515,MF,"protein binding","Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).",IPI GO:0005634,CC,nucleus,"A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.",IEA GO:0005737,CC,cytoplasm,"All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.",IDA GO:0005739,CC,mitochondrion,"A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.",IEA GO:0005769,CC,"early endosome","A membrane-bounded organelle that receives incoming material from primary endocytic vesicles that have been generated by clathrin-dependent and clathrin-independent endocytosis; vesicles fuse with the early endosome to deliver cargo for sorting into recycling or degradation pathways.",IDA|ISS GO:0005886,CC,"plasma membrane","The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.",IEA GO:0006357,BP,"regulation of transcription from RNA polymerase II promoter","Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter.",TAS GO:0006493,BP,"protein O-linked glycosylation","A protein glycosylation process in which a carbohydrate or carbohydrate derivative unit is added to a protein via the hydroxyl group of peptidyl-serine, peptidyl-threonine, peptidyl-hydroxylysine, or peptidyl-hydroxyproline, or via the phenol group of peptidyl-tyrosine, forming an O-glycan.",IDA|IMP GO:0006605,BP,"protein targeting","The process of targeting specific proteins to particular regions of the cell, typically membrane-bounded subcellular organelles. Usually requires an organelle specific protein sequence motif.",IDA GO:0019899,MF,"enzyme binding","Interacting selectively and non-covalently with any enzyme.",IPI GO:0050811,MF,"GABA receptor binding","Interacting selectively and non-covalently with the gamma-aminobutyric acid (GABA, 4-aminobutyrate) receptor.",NAS